Granted Patent
Utility
US 5,643,534 · App. 08/504,634
Corrosion inhibitor for alkanolamine units
Inventor:
Ljiliana V. Minevski
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Jul 20, 1995
Inventor
Ljiliana V. Minevski
Assignee (at issue)
Betzdearborn, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.